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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [HSW-M/BYT/BDW/BSW]udevadm unable to monitor HDMI plug/unplug event sporadically"
href="https://bugs.freedesktop.org/show_bug.cgi?id=82593#c19">Comment # 19</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - [HSW-M/BYT/BDW/BSW]udevadm unable to monitor HDMI plug/unplug event sporadically"
href="https://bugs.freedesktop.org/show_bug.cgi?id=82593">bug 82593</a>
from <span class="vcard"><a class="email" href="mailto:hugegreenbug@gmail.com" title="Hugh Greenberg <hugegreenbug@gmail.com>"> <span class="fn">Hugh Greenberg</span></a>
</span></b>
<pre>(In reply to Jani Nikula from <a href="show_bug.cgi?id=82593#c18">comment #18</a>)
<span class="quote">> (In reply to Hugh Greenberg from <a href="show_bug.cgi?id=82593#c11">comment #11</a>)
> > I am experiencing this bug on HSW. udevadm monitor does not show hot plug
> > events and it only triggers the rule below once:
> >
> > SUBSYSTEM=="drm", ACTION=="change", RUN+="script.sh"
> >
> > I'm using the current drm-intel-nightly and I'm using kernel 3.19.6.
>
> Btw, what's the failure mode you see after the missed event? If I'm
> interpreting the situation right, you should still have the picture on
> screen after you replug.</span >
I'm working on 2 different bugs related to HDMI on Ubuntu Unity. The missed
events didn't cause any problems, but they prevent me from running a command to
fix issues when an event occurs.
1. Plugging in the HDMI cable does show a picture on the external screen and
Unity is expanded to both screens, but sometimes, there are corrupted graphics
on the laptop screen. xrandr --auto will refresh the screen. I can't remember
the exact Compiz warning, but it couldn't apply a texture.
2. Removing the HDMI cable will not trigger Unity to resize the screen
sometimes. Again xrandr --auto will resize the screen.
Without your patch, I would need to poll the connector status and I would
rather not do that.</pre>
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